KR101982698B1 - Vehicle seat with side airbag apparatus - Google Patents

Abstract

The vehicle seat 10 includes an outer side frame 22, an inflator 56, and a side air bag 70 having a front chamber 70F and a rear chamber 70R. The inflator 56 is configured such that the rear chamber 70R is expanded and deployed at a higher pressure than the front chamber 70F, and the side airbag 70 moves the outer frame 22 from the vehicle front side. The portion including the front chamber 70F is stored in the side portion while being folded in the vehicle width direction outward of the outer frame 22 while extending in the width direction.

Description

Vehicle seat with side airbag device {VEHICLE SEAT WITH SIDE AIRBAG APPARATUS}

The present invention relates to a vehicle seat provided with a side airbag device.

The side airbag device described in Japanese Patent Laid-Open No. 2009-023494 has an accordion-folded seat-folded side to the seat front side and the seat width direction outside of the outer side frame of the seatback. An airbag, an auxiliary airbag foldable inward in the seat width direction of the outer frame, and a single inflator fixed in the seat width direction outward of the outer frame are provided. The base end of the auxiliary airbag extends from the seat front side of the outer side frame to the outside of the seat width direction and is engaged with the base end of the main air bag. The inflator is housed in the base end of the auxiliary airbag, and when a side collision is detected, the inflator supplies gas to the auxiliary airbag in advance of the main airbag. As a result, the auxiliary airbag expands and expands in the side portion of the seatback in advance of the main airbag, and moves the seat occupant to the inside of the seat width direction (the vehicle width direction center side).

In the vehicle seat equipped with the side airbag apparatus of Unexamined-Japanese-Patent No. 2014-080169, the front deployment airbag divided into the back and front back part inside the seat width direction of the outer frame of the seatback, and the inward expansion airbag The side airbag which has a side, and a single inflator are arrange | positioned and installed. When a side collision is detected, an inflator blows off gas in the vicinity of the engaging part with the inward expansion airbag in the back bag part of a front deployment airbag. As a result, the inwardly inflated airbag having a smaller capacity than the front-deployed airbag is inflated early while being supported by the outer side frame, and is configured to restrain the spine of the seat occupant having a high resistance value obliquely early and effectively from the rear.

In the invention described in Japanese Patent Laid-Open No. 2009-023494, gas is supplied from an inflator in which an auxiliary airbag folded in the seat width direction of the outer frame is disposed outside the seat width direction of the outer frame (vehicle width direction outside). Because of the supply, there is a delay in supplying the gas to the auxiliary airbag. For this reason, there is room for improvement from the viewpoint of prematurely moving the seating occupant to the vehicle width direction center side by the auxiliary airbag.

In the invention described in Japanese Patent Laid-Open No. 2014-080169, the folded side airbag is configured to be housed together with the inflator in the seat width direction inner side (vehicle width direction center side; seat occupant side) of the outer side frame. For this reason, it is difficult to mount to the seatback in which the clearance gap between the outer side frame and the seating occupant was narrow.

According to the present invention, the side airbag device can move the seat occupant to the center of the vehicle width direction at the time of a side collision, and easily mount the side airbag to the seatback having a narrow gap between the outer frame and the seat occupant. It provides a vehicle seat having a.

A vehicle seat having a side airbag device according to one aspect of the present invention includes an outer side frame disposed in a side portion of the vehicle width direction outside of the seat back, an inflator mounted on a vehicle width direction center side with respect to the outer side frame, It has a side airbag to receive the inflator. The side airbag includes a partition portion that divides the side airbag into a front chamber and a rear chamber, and the partition portion has a communication port. The inflator is accommodated in the afterchamber and is configured such that the afterchamber is expanded and developed at a higher pressure than the prechamber. The side airbag is accommodated in the side portion while the portion including the front chamber is folded outward in the vehicle width direction of the outer frame while the outer frame is extended from the vehicle front side in the vehicle width direction. The outer side frame has a side wall portion extending in the vehicle front-rear direction, and the inflator is mounted to the side wall portion in the vehicle width direction inner side of the outer side frame, and the outer storage portion is a portion including the front chamber. The outer housing part accommodated in the vehicle width direction outer side of the side wall portion of the side frame, and the outer housing portion accommodated in the vehicle width direction outer side of the outer side frame is located inside the vehicle width direction of the side wall portion of the outer side frame. It is disposed inclined toward the front of the vehicle relative to the inner housing, the outer housing is located in the vehicle front side than the stud bolt and nut for fastening and fixing the inflator to the side wall of the outer frame.

According to the aspect of this invention, the inflator is attached to the vehicle width direction center side of the outer side frame arrange | positioned in the side part of the vehicle width direction outer side of a seatback. The inflator is activated when, for example, a side collision of the vehicle is detected or predicted. Then, the rear chamber of the side airbag which accommodated the said inflator expands and develops earlier than all the chambers at high pressure, receiving reaction force in the vehicle width direction center side direction from an outer side frame, and presses a seating occupant to the vehicle width direction center side. . Thereby, the seat occupant can be moved to the vehicle width direction center side early. In addition, in the side airbag, a portion including the front chamber is placed outside the vehicle frame in the vehicle width direction (the side opposite to the seat occupant via the outside frame) while the outer frame is hung from the vehicle front side in the vehicle width direction. It is stored in the side portion in a folded state. This facilitates the mounting of the side airbag into the seatback in which the gap between the outer side frame and the seating occupant is narrow.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said prechamber in the expansion-expansion completion state restrains the chest and abdomen of a seating occupant, and the said back chamber of the expansion-expansion completion state is a seating occupant It may be configured to restrain the rear and the back of the chest and abdomen, and the whole and the back of the recessed occupant.

According to the aspect of this invention, the rear chamber which expands and develops early and high pressure earlier than a front chamber while receiving reaction force of the vehicle width direction center side direction from an outer side frame restrains extensively from the chest to the main part of a seat occupant (vehicle width direction) Pressurize to center). In addition, since the rear chamber presses all of the recessed portion and the rear portion of the seat occupant, the pressing direction of the recessed portion tends to follow the vehicle width direction in comparison with the configuration in which only the rear portion of the recessed portion is pressed by the rear chamber. From the above point, it becomes possible to move a seating occupant to the vehicle width direction center side effectively.

The vehicle seat provided with the side airbag apparatus of the aspect of this invention encloses the said side airbag accommodated in the said outer side frame by seeing from the flat cross section of the said seatback, and the inflation pressure of the said side airbag You may further have the enclosure member provided with the weak part to fracture | rupture.

According to the aspect of this invention, the surrounding member enclosed by the outer side frame surrounds the side airbag accommodated in the side part of the seatback from the planar cross section of a seatback. Thereby, the site | part including the front chamber side in the side airbag of a stored state, ie, the site | part folded in the vehicle width direction outer side of the outer side frame, can be kept in the folded state with a simple structure. In addition, since the enveloping member includes a weak portion that breaks at the inflation pressure of the side airbag, the expansion and expansion of the side airbag can be allowed with a simple configuration.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said enclosure member may be comprised by resin or the cloth impregnated with resin.

According to the aspect of this invention, the surrounding member which encloses the side airbag accommodated in the side part of the seatback is comprised by resin or cloth (for example, nonwoven fabric, such as felt) impregnated with resin. Therefore, the folded state of the side airbag can be firmly maintained.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said enclosure member may be comprised by the sheet-like material which has flexibility.

According to the aspect of this invention, the surrounding member surrounding the side airbag accommodated in the side part of the seatback is comprised by the sheet-like material (for example, cloth, paper, etc.) which has flexibility. Therefore, the enclosure member can be made simple.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, in the said side airbag accommodated in the said side part, the site | part located in the vehicle width direction outer side of the said outer frame is the vehicle width direction center of the said outer frame. It may be arrange | positioned inclined toward the vehicle front side with respect to the site | part located in the side.

According to the aspect of this invention, since it is comprised as mentioned above, the site | part folded in the vehicle width direction outer side of an outer side frame in a side airbag becomes easy to expand and deploy to a vehicle front side. In addition, as viewed from the flat end face of the seatback, the side airbag in the stored state becomes an outer shape along the surface of the seat occupant side in the side of the seatback. Thereby, it is not necessary to deteriorate the mountability to the seatback in which the clearance gap between the outer side frame and the seat occupant is narrow.

In the vehicle seat provided with the side airbag device of the aspect of the present invention, the upper surface of the side airbag in the inflated and deployed state may be an inclined surface of the descending gradient toward the vehicle front side.

According to the aspect of this invention, an upper arm part can push up an upper arm part to a vehicle upper side by pressing the upper arm part of a seat occupant from a vehicle rear side. As a result, the upper arm becomes difficult to intervene between the chest of the seat occupant and the side airbag, and the chest becomes difficult to receive a load from the upper arm.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said back chamber may expand | deploy and expand in the shape which becomes small in the dimension of a vehicle up-down direction as the part which restrains all the said recessed parts toward the vehicle front side. .

According to the aspect of this invention, since it is comprised as mentioned above, when the high pressure rear chamber expands and expands in a state where an occupant is located in the non-proprietary position in front of the vehicle of a seatback side, the load which the said occupant receives is small. can do.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, when the seat occupant is a three-dimensional mannequin of the international uniform side impact dummy AM50, the seat occupant who sits in the vehicle width direction center of the seat It may be arrange | positioned so that a part may overlap so that a fuselage and a vehicle may be seen from the front-back direction.

In addition, the "three-dimensional mannequin" described above is SAE 3DM prescribed | regulated by SAEJ 826 in US SAE standard.

According to the aspect of this invention, since it is comprised as mentioned above, an outer side frame is arrange | positioned close to a seat occupant. As described above, the inflator is mounted on the center side of the vehicle width direction of the outer frame arranged close to the seat occupant, and the inflator is accommodated in the rear chamber of the side airbag. As a result, the rear chamber can be expanded and developed at a high pressure at a close distance of the seat occupant, so that the seat occupant's movement toward the center of the vehicle width direction by the rear chamber can be further improved.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said partition part may be provided arrange | positioned inside the said side airbag.

According to the aspect of this invention, a side airbag is divided into a front chamber and a back chamber by the tether arrange | positioned inside the side airbag. Thereby, the expansion width in the vehicle width direction of the front chamber and the back chamber can be thickened. As a result, the occupant protection performance of the front chamber and the back chamber can be improved. Moreover, the pressing force to the vehicle width direction center side which a seating occupant receives from a rear chamber can be enlarged, and the movement of a seating occupant to a vehicle width direction center side can be promoted effectively.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said partition part is comprised by the front-back partition part and the upper-down partition part, and it is L-shape when the expansion-expansion state of the said side airbag is seen from the vehicle width direction. May be achieved.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said partition part is a front-back partition part which extends the said side airbag from the upper end part of the said side airbag to the lower part in the vehicle front-back direction center part, and from the lower end of the said front-back partition part You may be comprised from the up-and-down partition part extended to the front edge part side of the said side airbag.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said partition part may be the sewing part which sewed the bubble of the said side airbag.

According to the aspect of this invention, the side airbag is divided into the front chamber and the back chamber by the sewing part which sealed the bubble of the side airbag. Thereby, compared with the structure in which the tether is arrange | positioned inside the side airbag, the structure of a side airbag is simplified and it is possible to fold a side airbag small. This further improves the mountability of the side airbag into the seatback.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the said outer side frame extends to the vehicle width direction center side from the front end of the side wall part extended in the vehicle front-back direction, and seen from the flat cross section of the said seatback. It may be provided with the front flange part which becomes, and the rear flange part extended to the vehicle width direction center side from the rear end of the said side wall part.

In the vehicle seat provided with the side airbag apparatus of the aspect of this invention, the dimension of the sheet width direction of the said back flange part may be larger than the dimension of the said sheet width direction of the said front flange part. The rib which expanded in the sheet width direction inner side may be formed in the front-back direction center part of the said side wall part. The rib which bulged toward the sheet front side may be formed in the sheet width direction center part of the said back flange part. The outer side frame may be arrange | positioned so that a part of the said back flange part may overlap with the fuselage of the seat occupant seated in the vehicle width direction center of the said sheet | seat in the seat front-back direction.

As described above, in the vehicle seat provided with the side airbag device, the seating occupant can be moved to the vehicle width direction center side at the time of the side collision at an early stage. In addition, it becomes easy to mount the side airbags into the seatbacks with narrow gaps between the outer side frames and the seating occupants.

The features, advantages, and technical and industrial significance of exemplary embodiments of the invention will be described below with reference to the accompanying drawings, wherein like reference numerals designate like elements.
BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic side view which shows the expansion-expansion completion state of a side airbag in the vehicle seat | seat provided with the side airbag apparatus which concerns on embodiment of this invention.
FIG. 2 is an enlarged cross-sectional view showing an enlarged cut surface along the line II-II of FIG. 1.
FIG. 3 is a planar cross-sectional view showing a part of the seatback of the vehicle seat of FIG. 2 in an enlarged manner, and is a view showing a storage state of the side airbag. FIG.
4 is a plan sectional view showing an inflated and deployed state of the side airbag according to the embodiment of the present invention.
FIG. 5 is a plan sectional view corresponding to FIG. 4 showing a modification of the side airbag. FIG.
FIG. 6 is a plan sectional view corresponding to FIG. 3 for explaining a modification of the enclosure member. FIG.

Hereinafter, the vehicle seat 10 (hereinafter, abbreviated as "vehicle seat 10") provided with the side airbag device 50 according to the embodiment of the present invention will be described with reference to FIGS. . In addition, the arrow FR, the arrow UP, and the arrow OUT suitably described in each drawing have shown the outward of the vehicle front direction (advancing direction), an upward direction, and the width direction, respectively. Hereinafter, in the case of simply describing using the front, rear, left and right directions, unless otherwise indicated, the front and rear of the vehicle front and rear directions, the left and right in the vehicle left and right directions (vehicle width direction), and the top and bottom of the vehicle up and down directions are indicated. In addition, in some drawings, some code | symbols may be abbreviate | omitted from the relationship which makes drawing easy to see.

(Overall Configuration of Vehicle Seat 10)

First, the outline | summary of the whole structure of the vehicle seat 10 is demonstrated, and the structure of the side airbag apparatus 50 which is a principal part of this embodiment is demonstrated after that. As shown in FIG. 1, the vehicle seat 10 includes a seat cushion 14, a seatback 16 connected to the rear end of the seat cushion 14 so that reclining is possible, and a headrest connected to an upper end of the seatback 16. (18) is provided. Moreover, in the said vehicle seat 10, the side airbag apparatus 50 is mounted in 16 A of side parts (side support part) of the vehicle width direction outer side of the seatback 16. As shown in FIG. The vehicle seat 10 is, for example, a driver's seat of a left handled car or a passenger seat of a right handled car, and is disposed on the left side of the vehicle compartment. The front-back direction, the left-right direction (width direction), and the up-down direction of the said vehicle seat 10 correspond with the front-back direction, the left-right direction (width direction), and the up-down direction of a vehicle. When the said vehicle seat 10 is arrange | positioned at the right side in a cabin, it becomes a structure of right and left symmetry with this embodiment.

In addition, in FIG. 1, the dummy P for a collision test seats on the vehicle seat 10 instead of an actual occupant. In addition, in FIG. 2, the chest C of the dummy P is schematically shown by a dashed-dotted line. The dummy P is an AM50 (50 percentile of an American adult male) of the World Side Impact Dummy (World SID). The said dummy P is seated on the vehicle seat 10 by the seating method prescribed | regulated by the side collision test method. The front-back position of the seatback 16 with respect to the vehicle, and the inclination angle of the seatback 16 with respect to the seat cushion 14 are adjusted to the reference setting position corresponding to the seating method described above.

Six ribs R1, R2, R3, R4, R5, and R6 are provided in the body of the dummy P. The ribs R1, R2, R3, R4, R5, and R6 are "shoulder ribs R1", "bust ribs R2", and "thorax ribs R3" in order from the top. It may be called "lower rib (R4)", "upper rib (R5)", and "lower rib (R6)". The shoulder rib R1 is attached to the shoulder S of the dummy P. The bust rib R2, the thorax rib R3, and the thorax rib R4 are provided in the chest C of the dummy P. The abdominal rib R5 and the abdominal rib R6 are provided in the abdomen B of the dummy P. As shown in FIG. Hereinafter, the dummy P may be called "seat occupant P."

3, the back pan BP of the three-dimensional mannequin (heap point mannequin) 3DM of AM50 is shown by the dashed-two dotted line. The three-dimensional mannequin (3DM) is a SAE 3DM defined by SAEJ 826 in the SAE standard of the United States.

As shown in FIGS. 1-3, the seatback 16 of the vehicle seat 10 is a seatback frame 20 and the seatback spring 30 attached to the seatback frame 20 (not shown in other than FIG. 3). And a seatback pad 36 (not shown in Fig. 3) except for the seatback frame 20 and a seatback skin 38 covering the seatback pad 36.

The seatback frame 20 is made of metal, for example, and constitutes a skeleton of the seatback 16. The seatback frame 20 includes an outer side frame 22 extending in the up and down direction of the seatback 16 in the side portion 16A of the vehicle width direction outer side of the seatback 16 and the vehicle width direction of the seatback 16. The inner side frame 24 extended in the up-down direction of the seatback 16 in the side part (side support part) 16B of the center side is provided. In addition, the seat back frame 20 includes an upper frame (not shown) connecting upper ends of the outer side frame 22 and the inner side frame 24 in the vehicle width direction, and the outer side frame 22 and the inner side frame. A lower frame (not shown) for connecting the lower ends of the 24 in the vehicle width direction is provided. In addition, in the following description, said side part 16A is called "outer side part 16A."

As shown in FIG. 3, the outer side frame 22 has a side wall portion 22A extending in the front-rear direction of the vehicle as viewed from the flat end surface of the seatback 16 and a vehicle width direction center side from the front end of the side wall portion 22A. A front flange portion 22B extending in the sheet width direction inner side and a rear flange portion 22C extending from the rear end of the side wall portion 22A toward the vehicle width direction center side are provided. The rear flange portion 22C has a larger dimension in the vehicle width direction than the front flange portion 22B, and the outer side frame 22 has a substantially L shape when viewed from a flat cross section of the seat back 16. . In addition, ribs swelled in the sheet width direction inside are formed in the front-rear direction center part of the side wall part 22A, and ribs bulged toward the sheet front side are formed in the sheet width direction center part of the rear flange part 22C. The outer side frame 22 is disposed so that a part of the rear flange portion 22C (the part on the vehicle width direction center side) overlaps with the back pan BP of the three-dimensional mannequin 3DM described above in the front-rear direction of the seat. The gap with the seat occupant P is set narrow. The inner side frame 24 has the same configuration except that the inner side frame 24 is formed in a symmetrical shape with the outer side frame 22.

The seatback spring 30 shown in FIG. 3 is arrange | positioned between the outer side frame 22 and the inner side frame 24, the wire member 32 attached to the seatback frame 20, and the said wire member ( It is comprised by the plate member which is not shown in figure 32 attached. The wire member 32 is formed by bending a metal wire, for example. The wire member 32 includes a pair of left and right side spring portions 32A extending in the vertical direction of the seat back 16 (the side spring portions 32A at the center of the vehicle width direction are not shown). It lies between the upper frame and the lower frame of the seatback frame 20. The plate member is press-formed and formed, for example, and the plate | board thickness direction is attached to the sheet | seat front side of the wire member 32 in the attitude | position along the front-back direction of the seatback 16. As shown in FIG.

The seatback pad 36 shown in FIG. 3 is formed of foams, such as urethane foam, for example, and comprises the cushioning material of the seatback 16. As shown in FIG. The seat back pad 36 is a pad center portion 36A and a pair of left and right pad side portions 36B provided on both left and right sides of the pad center portion 36A (the pad side portion 36B on the vehicle width direction center side is illustrated). Omit). The pad center portion 36A is disposed on the width direction center side of the seat back 16 and is supported from the seat back side by the seat back spring 30. The left and right pad side portions 36B are formed in a substantially C-shape opened in the sheet width direction and accommodate the outer side frame 22 and the inner side frame 24 therein. The said pad side part 36B is expanded in the seat front side rather than the pad center part 36A, and it is a shape which ensures the side support property with respect to the seating occupant P. FIG.

The seatback skin 38 shown in FIG. 3 is formed of, for example, cloth, leather or synthetic leather, and constitutes the skin of the seatback 16. The seatback skin 38 includes a front skin 40 covering the pad center portion 36A from the sheet front side, a front side skin 42 covering the pad side portion 36B from the sheet front side, and a pad side portion ( The rear side skin 44 which covered 36B from the sheet width direction outer side and the sheet back side, and covered the pad center part 36A from the sheet back side is provided. The front side skin 42 is sewn with the front skin 40 at the sewing portion T1, and is sewn with the rear side skin 44 at the sewing portion T2. The sewing portion T2 of the front side skin 42 and the rear side skin 44 is located in the vicinity of the leading edge portion 16A1 (the so-called style portion) of the outer side portion 16A. The sewing portion T2 is configured to open together with the pad side portion 36B when the side airbag 70 described later is inflated and deployed. In addition, in this embodiment, the front skin 40 is the structure by which the skin piece 40A, 40B was sewed in the sewing part T3 located in the sheet width direction inner side rather than the sewing part T1.

(Configuration of Side Airbag Device 50)

1 to 3, the side airbag device 50 includes a single gas generator 54 mounted inside the vehicle width direction of the outer side frame 22 and a gas from the gas generator 54. It is provided with the single side airbag 70 which receives a supply and expands and expands. The gas generator 54 and the side airbag 70 normally become the airbag module 52 shown in FIG. 3, and are accommodated in the outer side part 16A. The airbag module 52 is configured to include an enclosure member 82 (not shown in FIG. 3 except for FIG. 3) shown in FIG. 3.

The gas generator 54 is comprised by the single inflator 56 and the single retainer 58 (not shown in FIG. 1). The inflator 56 and the retainer 58 are arranged inside the sheet width direction of the side wall portion 22A of the outer frame 22 and on the sheet front side of the rear flange portion 22C. The inflator 56 is a so-called cylinder type inflator, and is formed in a cylindrical shape. The inflator 56 is arranged in an axial direction (length direction) in a posture along the vertical direction of the seatback 16. The retainer 58 is a member also called a diffuser, and is formed in a substantially rectangular tube shape by metal. The retainer 58 has an axial direction in a posture along the vertical direction of the seat back 16, and an inflator 56 is inserted inside the retainer 58. The retainer 58 has a function of rectifying the gas generated from the inflator 56.

From the outer peripheral part of the inflator 56, a pair of up and down stud bolts 56A (refer FIG. 2 and FIG. 3) protrudes toward the sheet width direction outer side (vehicle width direction outer side). The stud bolt 56A penetrates the retainer 58 and the side wall portion 22A, and a nut 60 is screwed to the distal end side of each stud bolt 56A. As a result, the inflator 56 is fastened to the outer frame 22 together with the retainer 58 (so-called side fixing). The upper and lower stud bolts 56A are not limited to the configuration provided in the inflator 56, and may be configured in the retainer 58. In that case, the inflator 56 is fixed to the retainer 58 by means of crimping or the like, for example. In addition, between the retainer 58 and the rear flange portion 22C, a clearance of about 10 mm is set in the vehicle front-rear direction, for example, and the airbag module 52 is mounted on the outer frame 22. It's easy.

At the upper end or lower end of the inflator 56 (in this case, the upper end), a gas ejection part 56B is provided. The gas blowing section 56B is disposed at the same height as the chest C of the seated occupant P. As shown in FIG. The gas ejection part 56B is provided with a plurality of gas ejection openings (not shown) arranged in the circumferential direction of the inflator 56. When the inflator 56 is started (operated), gas is ejected from the gas ejection openings. It is ejected radially. As shown in FIG. 1, the side plate ECU 62 mounted on the vehicle is electrically connected to the inflator 56. The sidewall sensor 64 which detects a side collision is electrically connected to the sidewall ECU 62. The sidewall ECU 62 is configured to start the inflator 56 when the side collision is detected based on the output of the sidewall sensor 64. The sidewall sensor 64 includes, for example, a pressure sensor or an acceleration sensor (sensor in a door) disposed in the front side door and a rear side door, and an acceleration sensor (sensor in the pillar) disposed in the B pillar. It is configured to include.

In addition, when a collision prediction sensor (pre-crush sensor) for predicting (predicting) a side collision is electrically connected to the side collision ECU 62, the side collision ECU 62 is a side collision based on a signal from the collision prediction sensor. In this case, the inflator 56 may be activated. As the collision prediction sensor, for example, at least one of a millimeter wave radar, a stereo camera, and an infrared laser that can monitor the front and side of the vehicle can be applied.

On the other hand, the side airbag 70 is a so-called front and rear two-chamber side airbag, as shown in Figs. 1, 2 and 4. The side airbag 70 has a structure in which a single encapsulation body 72 is divided into a front chamber 70F and a rear chamber 70R by a tether 74 (partition wall: partition cloth) serving as a partition portion. The encapsulation member 72 is formed by, for example, two substrates 76 and 78 (refer to FIGS. 2 and 4; reference numerals are omitted in other drawings) formed by cutting a nylon or polyester base material. It overlaps with each other, and the outer peripheral edge part is sewn in the sewing part T4 (refer FIG. 2 and FIG. 4: illustration is abbreviate | omitted in another figure), and is formed in the shape of a long bag.

In addition, the manufacturing method of the sealing body 72 is not limited to the above, It can change suitably. For example, it is good also as a structure which the sealing body 72 is manufactured, when one bubble is folded in two and the outer peripheral edge part is sewn. For example, the sealing body 72 may be manufactured by a method of weaving into a tubular shape by an automatic loom (so-called OPW method). In the following description, the front, rear, up and down directions described with respect to the side airbag 70 indicate the direction in the inflated and deployed state of the side airbag 70, and substantially coincide with the directions of the front, back, up and down of the seatback 16. .

The tether 74 is formed by cutting, for example, the same material as the bubbles 76 and 78 of the side airbag 70 into a long strip shape. As shown in FIG. 2 and FIG. 4, the tether 74 has one long side edge portion sewn into one bubble 76 in the sewing portion T5, and the other long side edge portion thereof is sewn into the sewing portion T6. In addition, the other bubble 78 is sewn. The said tether 74 is comprised by the front-back partition part 74A and the upper-down partition part 74B, and is formed so that it may become substantially L shape when the inflated and expanded state of the side airbag 70 is seen from the vehicle width direction. It is.

Specifically, the front-back partition part 74A extends from the upper edge part of the side airbag 70 to the lower side of the side airbag 70 in the front-back direction center part of the side airbag 70, It extends in the up-down direction of the airbag 70. The upper and lower partitions 74B extend from the lower end of the front and rear partitions 74A to the leading edge side of the side airbag 70, and the front end reaches the leading edge of the side airbag 70. In the front and rear partitions 74A of the tether 74, a plurality of communication holes 80 (see FIG. 4; not shown in the other figures) are formed in the vertical direction of the side airbag 70 in the vertical direction. It is. The front chamber 70F and the rear chamber 70R communicate with each other via the communication port 80. In addition, the number of the communication ports 80 is not limited to three, It can change suitably.

The gas generator 54 mentioned above is accommodated in the up-down direction intermediate part in the rear end part in 70 R of rear chambers. The stud bolts 56A above and below the inflator 56 are screwed into the nut 60 through the bubble 76 and the side wall portion 22A of the outer frame 22. Thereby, the side airbag 70 is fastened and fixed to the outer side frame 22 using the inflator 56 (gas generator 54). The gas generated by the inflator 56 in the rear chamber 70R is supplied to the front chamber 70F through the plurality of communication ports 80 formed in the front and rear partition portions 74A. As a result, the side airbag 70 is inflated and deployed toward the seat front side of the outer side portion 16A, and the seat occupant P and the vehicle body side portion (for example, the door trim and the B-pillar garnish of the front side door) are not shown. ) Is configured to intervene.

As shown in FIG. 1, the side airbag 70 is inflated and deployed in the longitudinal direction of the seatback 16, and the chest C, the abdomen B, and the recess L of the seating occupant P are extended. Is constrained from the vehicle width direction outer side. In the inflated and deployed state of the side airbag 70, the front and rear partition portion 74A of the tether 74 extends in the up and down direction of the seatback 16 along the leading edge portion 16A1 of the outer side portion 16A and is seated. The front and rear center portions of the chest C and the abdomen B of the occupant P face each other. In addition, the upper and lower partitions 74B of the tether 74 extend from the lower end of the front and rear partitions 74A along the waist of the seating occupant P to the vehicle front side. As a result, the front chamber 70F, which is separated from the rear chamber 70R by the front and rear partitions 74A and the upper and lower partitions 74B, has removed all of the chest C and the abdomen B of the seating occupant P. Redeem. The rear chamber 70R is configured to restrain the rear portion of the chest C and the abdomen B, and all of the recess portion L and the rear portion.

In addition, the post chamber 70R includes the breast abdominal restraint 70R1 that restrains the rear portions of the chest C and the abdomen B, and the waist restraint 70R2 that restrains the entirety and the rear part of the recess L. FIG. It is formed so that it may become substantially L-shape when it sees expansion expansion state from the vehicle width direction. The breast abdominal restraint part 70R1 expands and expands mainly in the outer side part 16A in the vehicle rear side of the front chamber 70F, and is located at the rear part of the abdomen B from the upper end part in the rear part of the chest C. It restrains to the lower end part in. In the waist restraint part 70R2, the rear part side which restrains the rear part of the recessed part L expands and expands in the outer side part 16A, and the front side which restrains all of the recessed part L is the front chamber 70F. In addition, it expands and expands toward the vehicle front side than the outer side portion 16A. The whole side of the waist restraint part 70R2 is distinguished from the front chamber 70F by the up-and-down partition part 74B, and is expanded and expanded below the vehicle of the front chamber 70F. The upper and lower partitions 74B are inclined so as to gently descend toward the vehicle front side in the inflated and deployed state of the side airbag 70. In addition, the lower edge of the rear chamber 70R is inclined so as to gently rise toward the vehicle front side. As a result, all the sides of the waist restraint portion 70R2 in the expansion-deployment completed state (the portion that restrains the entire recessed portion L) are formed so that the dimension in the vertical direction of the vehicle becomes smaller as it goes toward the vehicle front side.

In addition, in this embodiment, as shown in FIG. 1, it is comprised so that the upper surface of the side airbag 70 of an inflation-expansion completion state may become 70 U of inclination surfaces of a descending gradient toward a vehicle front side. Specifically, the entire inclination surface of the entire upper surface of all the chambers 70F in the inflated and deployed state and the top surface of the breastplate restraint portion 70R1 in the inflated and deployed state are inclined toward the front side of the vehicle. ) The inclined surface 70U presses the upper arm portion A of the seating occupant P from the vehicle rear side when the side airbag 70 is inflated and deployed. As a result, the upper arm portion A is configured to be pushed upward by the inclined surface 70U (see the upper arm portion A shown by the dashed-dotted line in FIG. 1).

As mentioned above, the side airbag 70 of the said structure becomes the airbag module 52 shown in FIG. 3 with the gas generator 54 normally, and is accommodated in outer side part 16A. In addition, in FIG. 3, the side airbag 70 of a stored state is schematically shown only by the outline (outline). As for the side airbag 70 of the said storing state, the part containing the front chamber 70F is the vehicle width direction outer side of the outer side frame 22, while the outer side frame 22 hangs from the vehicle front side to the vehicle width direction. Folded into.

That is, the side airbag 70 in a stored state includes the inner housing 70A located at the center side of the vehicle width direction of the outer frame 22 together with the gas generator 54 and the outer frame 22. The outer housing part 70B located in the vehicle width direction outer side, and the connection part 70C which connected the inner housing part 70A and the outer housing part 70B to the vehicle front side of the outer side frame 22 are comprised. . The side airbag 70 in the storage state is mainly folded in the outer storage unit 70B. The outer housing portion 70B is folded by a folding method including any of folding folding, rolling folding, upper and lower fold back, or a folding method in which these are appropriately combined.

Moreover, the outer side housing part 70B is arrange | positioned inclined toward the vehicle front side with respect to the inner side housing part 70A, and is located in the vehicle front side rather than the nut 60. As shown in FIG. Most of the outer housing parts 70B are located on the vehicle front side than the front flange portions 22B of the outer side frames 22. On the other hand, most of the inner housing portion 70A is located behind the vehicle rather than the front flange portion 22B. Accordingly, the airbag module 52 including the side airbag 70 in the folded state is inclined to follow the front side skin 42 constituting the surface of the seat occupant P side in the outer side portion 16A. ought.

In addition, in this embodiment, the side airbag 70 accommodated in the outer side part 16A as mentioned above is carried out by the enclosing member 82 (refer FIG. 3; It is surrounded by a plane view. The enclosing member 82 is made of resin or cloth impregnated with a resin (for example, nonwoven fabric such as felt), and surrounds the side airbag 70 in a stored state as viewed from a flat cross section of the seatback 16. It is formed. The enclosure member 82 has rigidity capable of maintaining its own shape.

One end portion 82A of the enclosing member 82 is sandwiched between the retainer 58 and the side wall portion 22A inside the sheet width direction of the outer frame 22. The stud bolt 56A of the inflator 56 penetrates one end 82A of the enclosure member 82. In addition, the other end portion 82B of the enclosing member 82 is disposed outside the sheet width direction of the outer frame 22. The stud bolt 56A of the inflator 56 penetrates through the other end 82B of the enclosing member 82 and is screwed to the nut 60. As a result, the enclosing member 82 is locked (locked and fixed here) to the outer side frame 22, and the folded state of the side airbag 70 is maintained by the enclosing member 82.

The enclosing member 82 is provided with a weak portion 82W at the corner of the vehicle front side and the vehicle width direction outer side. The said weak part 82W is formed in the thickness of the said corner part of the enclosure member 82 locally, for example, and is extended in the up-down direction of the seatback 16. As shown in FIG. The weak portion 82W is configured to be easily broken (opened) by the inflation pressure of the side airbag 70. By the said breaking, the whole side of the surrounding member 82 is parted in the sheet width direction, and it is set as the structure which the expansion and expansion of the side airbag 70 is permitted. In addition, the weak part 82W is not limited to the thin part of the said corner part of the surrounding member 82, and the said structure can be changed suitably. For example, it is good also as a structure in which the weak part 82W was formed by forming two or more slit, a hole, etc. in the above-mentioned corner part in the vertical direction of the seatback 16.

(Actions and effects)

Next, the operation and effect of the present embodiment will be described.

In the vehicle seat 10 having the above-described configuration, when the side projection ECU 62 detects a side collision of the vehicle based on the output of the side projection sensor 64, the inflator mounted on the vehicle width direction center side of the outer frame 22. 56 is activated. Then, while the rear chamber 70R of the side airbag 70 containing the inflator 56 receives a reaction force in the vehicle width direction center side direction by the outer frame 22, it is earlier than the front chamber 70F. It expands and expands by high pressure, and presses seating occupant P to the vehicle width direction center side (refer arrow F of FIG. 2). Thereby, seating occupant P can be moved to the vehicle width direction center side early.

In addition, as shown in FIG. 3, the side airbag 70 includes the front chamber 70F while the outer frame 22 extends from the vehicle front side in the vehicle width direction. ) Is housed in the outer side portion 16A in a state of being folded in the vehicle width direction outer side (the side opposite to the seating occupant P via the outer side frame 22). Thereby, mounting of the side airbag 70 to the seatback 16 in which the clearance gap between the outer side frame 22 and the seating occupant P was narrowed becomes easy.

Supplement for the above effects. The side airbag 70 has a simple structure in which a single encapsulation body 72 is divided into a front chamber 70F and a rear chamber 70R by a tether 74, and is formed by a rear chamber 70R. It is a structure which presses seating occupant P to the vehicle width direction center side. As a result, the auxiliary airbag or the inward inflation airbag described in the compartment of the background art becomes unnecessary, and the overall configuration of the side airbag 70 is miniaturized. And this simple and small side airbag 70 is accommodated in the vehicle width direction over the outer side frame 22. As shown in FIG. Thereby, the mountability of the side airbag 70 with respect to the seatback 16 in which the clearance gap between the outer side frame 22 and the seating occupant P was set narrow is improved.

In addition, in this embodiment, all the chambers 70F in the expansion-expansion completion state restrain all of the chest C and the abdomen B of the seating occupant P. As shown in FIG. The rear chamber 70R in the inflated and deployed state restrains the rear portion of the chest C and the abdomen B of the seated occupant P, and the whole and the rear portion of the recessed portion L of the seated occupant P. That is, after receiving the reaction force in the vehicle width direction center side direction from the outer side frame 22, the rear chamber 70R which expands and develops at a high pressure earlier than the front chamber 70F is taken from the chest C of the seating occupant P. The recessed part L is restrained extensively (pressurized toward the vehicle width direction center side). Thereby, the pressing force of the vehicle width direction center side direction acts easily with respect to the gravity center of seating occupant (dummy) P. In addition, since the rear chamber 70R presses all of the recess portion L and the rear portion of the seating occupant P, the rear portion of the recess portion L is pressed in comparison with the case where only the rear portion of the recess portion L is pressed by the rear chamber. The pressing direction of L) tends to follow the vehicle width direction. In view of the above, the seating occupant P can be effectively moved to the vehicle width direction center side.

In the present embodiment, the enclosing member 82 held by the outer side frame 22 normally takes the side airbag 70 housed in the outer side portion 16A from the flat end surface of the seat back 16. I am surrounded. Thereby, the site | part including the front chamber 70F side in the side airbag 70 of a storage state, ie, the outer side housing part 70B folded in the vehicle width direction outer side of the outer side frame 22, is simplified. The configuration can be kept folded. In addition, since the fragile portion 82W is formed in the enclosing member 82 so as to break at the inflation pressure of the side airbag 70, the expansion and expansion of the side airbag 70 can be permitted in a simple configuration.

In addition, since the surrounding member 82 is made of resin or cloth impregnated with resin, the folded state of the side airbag 70 is compared with the case where the surrounding member 82 is made of cloth, paper, or the like. It can keep firmly. In addition, since the folded state of the side airbag 70 can be held by the enclosing member 82 before the airbag module 52 is mounted to the outer frame 22, the airbag with respect to the outer frame 22 The assemblability of the module 52 is improved. In addition, since the load from the seat occupant P in normal times becomes less likely to be applied to the side airbag 70 in the stored state, the folded state of the side airbag 70 can be maintained in the original state for a long time. have.

In addition, in this embodiment, as shown in FIG. 3, in the side airbag 70 accommodated in the outer side part 16A, the outer accommodating part 70B located in the vehicle width direction outer side of the outer side frame 22. As shown in FIG. ) Is inclined toward the vehicle front side with respect to the inner housing portion 70A located on the vehicle width direction center side of the outer side frame 22. As a result, the portion of the side housing bag 70B of the side airbag 70, that is, the outside of the outer side frame 22, which is folded outward in the vehicle width direction is easily expanded to the vehicle front side. In addition, since the side airbag 70 in the stored state becomes an outer shape along the surface of the seat occupant P side in the outer side portion 16A, as viewed from the flat end face of the seatback 16, the outer side frame It is not necessary to deteriorate the mountability to the seatback 16 in which the gap between 22 and the seating occupant P is set narrow. In addition, since the outer housing 70B is located at the front side of the vehicle rather than the nut 60, the outer housing 70B is not disturbed when the inflator 56 is fastened and fixed to the outer frame 22.

In addition, in this embodiment, the upper surface of the side airbag 70 in the inflated and deployed state becomes the inclined surface 70U of the downward gradient toward the vehicle front side. The upper arm portion A of the inclined surface 70U can push the upper arm portion A upward from the vehicle rear side by pressing the upper arm portion A of the seating occupant P from the vehicle rear side. As a result, the upper arm portion A is difficult to intervene between the chest C and the side airbag 70 of the seating occupant P, and the chest C is difficult to receive a load from the upper arm portion A. Lose.

In addition, in this embodiment, all the sides of the waist restraint part 70R2 provided in the rear chamber 70R expand and expand in the shape which becomes small in the dimension of a vehicle up-down direction toward the vehicle front side. Therefore, when the high-pressure rear chamber 70R is inflated and deployed in a state where the occupant is positioned in an out of position (OPO) in front of the vehicle of the outer side portion 16A, the load received by the occupant is You can do less. Therefore, the so-called OOP performance can be improved.

In addition, in this embodiment, when the seating occupant is a three-dimensional mannequin (3DM) of AM50, the outer side frame 22 is arrange | positioned so that one part may overlap with the back pan BP of the said three-dimensional mannequin (3DM) as seen from the vehicle front-back direction. It is. As a result, the outer frame 22 is configured to be disposed close to the seat occupant P. As shown in FIG. As described above, the inflator 56 is mounted on the vehicle width direction center side of the outer frame 22 disposed close to the seat occupant P, and the inflator 56 is the rear chamber of the side airbag 70. It is accommodated in 70R. As a result, since the rear chamber 70R can be expanded and developed at an early and high pressure at a close distance of the seat occupant P, the movement of the seat occupant P toward the center of the vehicle width direction by the rear chamber 70R is prevented. It can be further early.

In addition, in this embodiment, the side airbag 70 is divided into the front chamber 70F and the back chamber 70R by the tether 74 arrange | positioned inside the side airbag 70. As shown in FIG. Thereby, the expansion width of the front chamber 70F and the rear chamber 70R in the vehicle width direction can be thickened. As a result, the occupant protection performance of the front chamber 70F and the rear chamber 70R can be improved. Moreover, the pressing force to the vehicle width direction center side which the seating occupant P receives from the rear chamber 70R can be enlarged, and the movement of the seating occupant P to the vehicle width direction center side can be promoted effectively.

In addition, in this embodiment, since the gas ejection part 56B provided in the upper end part of the inflator 56 is arrange | positioned at the height equivalent to the chest part C of the seating occupant P, it ejects from the gas ejection part 56B. The back chamber 70R begins to expand prematurely near the scapula of the seating occupant P by the gas. Thereby, the scapula which has relatively high load tolerance among the body of the seat occupant P can be pressed early to the vehicle width direction center side, and it can promote the movement of the seat occupant P to the vehicle width direction center side more effectively. Can be.

<Supplementary explanation of embodiment>

In addition, in the said embodiment, although the gas ejection part 56B was provided in the upper end part of the inflator 56, this invention is not limited to this, The gas ejection part 56B is provided in the lower end part of the inflator 56. In addition, in FIG. It is good also as a structure. In that case, the gas blowing part 56B is arranged near the lower end of the seat back frame 20 (connection part with a seat cushion frame not shown). Thereby, the curvature of the seatback frame 20 at the time of gas ejection from the gas ejection part 56B can be reduced.

In addition, in the said embodiment, although the sealing body 72 of the side airbag 70 was set as the structure divided into the front chamber 70F and the rear chamber 70R by the tether 74, this invention is not limited to this. Do not. Similar to the side airbag 71 (first modification) shown in FIG. 5, the sewing portion T7 in which the bubbles 76 and 78 are sewn together may be a partition portion. In that case, the communication part 80 (not shown in FIG. 5) is formed because the sewing part T7 is partially omitted. In the said side airbag 71, since a structure is further simplified and it can be folded small, the mountability to the seatback 16 improves further.

In addition, in the said embodiment, although the case where the enclosure member 82 was comprised by resin or the cloth impregnated with resin was demonstrated, this invention is not limited to this, The material of the enclosure member 82 can be changed suitably. Do. For example, you may comprise like the 2nd modified example shown in FIG. In the second modification, the enclosure member 90 is made of a sheet-like material (for example, cloth or paper) having flexibility. The enclosing member 90 surrounds the side airbag 70 in a stored state from the vehicle front side, the vehicle width direction center side, and the vehicle width direction outer side, as viewed from the flat end surface of the seat back 16. One end portion 90A of the enclosing member 90 located on the vehicle width direction center side of the inner housing portion 70A is locked to the side airbag 70 by means of sewing or the like. The other end 90B of the surrounding member 90 is locked to the outer frame 22 in the same manner as the surrounding member 82, and the folded state of the side airbag 70 is closed by the surrounding member 90. It is maintained.

The enclosing member 90 is provided with a weak part 90W at the corner of the sheet front side and the sheet width direction outer side. The weak part 90W is vulnerable, for example, by forming a plurality of slits or holes in the corner part in the vertical direction of the seat back 16. The weak part 90W is configured to break at the inflation pressure of the side airbag 70. Also in the above modification, it is possible to allow the expansion and expansion of the side airbag 70 while keeping the side airbag 70 folded in a simple configuration. In addition, since the surrounding member 90 is made of cloth, paper, or the like, the configuration can be further simplified.

In addition, in the said embodiment, although the surrounding member 82 set it as the structure clamped by the outer frame 22 using the stud bolt 56A of the inflator 56, this invention is not limited to this. The locking method of the enclosure member 82 to the outer frame 22 can be appropriately changed. For example, the enclosure member 82 may be configured to be locked to the outer frame 22 using a clip, an adhesive tape, or the like. This point is the same also about the enclosure member 90 mentioned above.

In addition, although the said embodiment and the said 2nd modification made it the structure provided with the surrounding members 82 and 90, this invention is not limited to this, It is good also as a structure where the surrounding members 82 and 90 were abbreviate | omitted. . Even in this case, however, it is preferable to provide a holding means for holding the side airbag 70 in a folded state.

In addition, in the said embodiment, although the part of the outer side frame 22 was seen overlapping with the vehicle front-back direction with respect to the back fan BP of the three-dimensional mannequin 3DM seated on the vehicle seat 10, this invention was made. Is not limited to this. It is good also as a structure which the outer side frame 22 is arrange | positioned in the position which does not overlap as mentioned above.

Moreover, in the said embodiment, the front chamber 70F of the expansion-expansion completion state restrains all the chest C and the abdomen B of the seating occupant P, and the rear chamber 70R of the expansion-expansion completion state However, although the rear part of the chest C and the abdomen B of the seating occupant P, and the whole part and the back part of the recessed part L were restrained, this invention is not limited to this. The restraint point of the seat occupant by the front chamber 70F and the rear chamber 70R, and the shape of the front chamber 70F and the rear chamber 70R can be changed suitably.

In addition, this invention can be variously changed and implemented in the range which does not deviate from the summary. In addition, the scope of the present invention is not limited to the said embodiment.

Claims (15)

In the vehicle seat 10 provided with the side airbag device 50,
An outer side frame 22 disposed in the side portion 16A of the vehicle width direction outer side of the seat back 16;
An inflator (56) mounted on the center side in the vehicle width direction with respect to the outer frame (22);
A side airbag (70) for receiving the inflator (56),
The side airbag 70 includes a partition portion that divides the side airbag 70 into a front chamber 70F and a rear chamber 70R, and the partition portion has a communication port 80, and the inflator 56 Is accommodated in the rear chamber 70R, and the rear chamber 70R is configured to expand and develop at an earlier and higher pressure than the front chamber 70F, and the side airbag 70 opens the outer frame 22. A portion including the front chamber 70F is stored in the side portion while being folded outward in the vehicle width direction of the outer frame 22 while extending in the vehicle width direction from the vehicle front side,
The outer frame 22 has a side wall portion 22A extending in the vehicle front-rear direction,
The inflator 56 is mounted to the side wall portion 22A inside the vehicle width direction of the outer frame 22,
The outer housing portion 70B, which is the portion including the front chamber 70F, is stored in a folded state outside the vehicle width direction of the side wall portion 22A of the outer frame 22,
The outer housing part 70B accommodated in the vehicle width direction outer side of the outer side frame 22 includes an inner housing part located inside the vehicle width direction of the side wall part 22A of the outer side frame 22 ( 70A) is inclined toward the front of the vehicle,
The outer housing portion 70B is located at the vehicle front side than the stud bolt 56A and the nut 60 which fasten and fix the inflator 56 to the side wall portion 22A of the outer frame 22. Vehicle seat 10 with airbag device 50 The method of claim 1,
The front chamber 70F in the inflated and deployed state restrains all of the chest C and the abdomen B of the seated occupant P, and the rear chamber 70R in the inflated and deployed state is the seated occupant ( A vehicle seat (10) comprising a rear airbag device (50) configured to restrain the rear portion of the chest (C) and the abdomen (B) of P) and all of the recessed portion (L) and the rear portion of the seated occupant (P). The method according to claim 1 or 2,
And an enveloping member (82; 90) enclosed in the outer frame (22) to surround the side airbag (70) housed in the side part in a planar section of the seatback (16),
The enveloping member (82; 90) is a vehicle seat (10) provided with a side airbag device (50) having a weak portion (82W; 90W) that breaks due to the inflation pressure of the side airbag (70). The method of claim 3, wherein
The enclosing member (82; 90) is a vehicle seat (10) comprising a side airbag device (50) constituted by a resin or cloth impregnated with a resin. The method of claim 3, wherein
The enclosing member (82; 90) is a vehicle seat (10) provided with a side airbag device (50) composed of a sheet-like material having flexibility. delete The method according to claim 1 or 2,
The vehicle seat (10) provided with the side airbag device (50) in which the upper surface of the said side airbag (70) of the inflation deployment completion state turns into the inclined surface (70U) of a downward gradient toward a vehicle front side. The method of claim 2,
The rear chamber 70R is a vehicle seat having a side airbag device 50 which is expanded and developed in a shape in which a portion in which the recessed portion L restrains the whole of the recessed portion L toward the vehicle front side is reduced in size. (10). The method of claim 1,
The outer side frame 22 is a vehicle seat having a side airbag device 50 which is arranged such that a part of the seat occupant P seated in the vehicle width direction center of the seat overlaps with a part of the body of the seat occupant P as seen in the vehicle front-back direction. (10). The method according to claim 1 or 2,
The partition part is a vehicle seat (10) provided with a side airbag device (50) which is a tether (74) disposed by being installed inside the side airbag (70). The method of claim 10,
The said partition part is comprised by 74 A of front and back partition parts, and the upper and lower partition parts 74B, and the side airbag apparatus 50 which forms an L shape when the inflated and expanded state of the said side airbag 70 is seen from the vehicle width direction. A vehicle seat (10) having a. The method of claim 10,
The partition portion includes a front and rear partition portion 74A which extends the side airbag 70 from the upper end portion of the side airbag 70 to the lower portion in the front and rear direction central portion of the vehicle, and from the lower end of the front and rear partition portion 74A. The vehicle seat 10 provided with the side airbag apparatus 50 comprised from the upper and lower partition parts 74B extended to the leading edge part side of the 70. The method according to claim 1 or 2,
The partition part is a vehicle seat (10) provided with the side airbag device (50) which is a sewing part which sewed the bubble of the said side airbag (70). The method of claim 1,
The outer side frame 22 extends from the front end of the side wall portion 22A and the front side of the side wall portion 22A to the vehicle width direction center side when viewed from the planar cross section of the seatback 16. A vehicle seat (10) comprising a flange portion (22B) and a side airbag device (50) having a rear flange portion (22C) extending from the rear end of the side wall portion (22A) toward the center in the vehicle width direction. The method of claim 14,
The sheet width direction dimension of the said back flange part 22C is larger than the dimension of the said sheet width direction of the said front flange part 22B, and it expands in the sheet width direction inner side in the front-back direction center part of the said side wall part 22A. The rib is formed, and the rib on the seat width direction center portion of the rear flange portion 22C is expanded to the seat front side, and the outer side frame is a seat occupant P seated on the vehicle width direction center of the seat. The vehicle seat (10) provided with the side airbag device (50) arrange | positioned so that a part of said back flange part (22C) may overlap with respect to the fuselage of a seat.

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